292 DEEP SEA FISHES. 
Station. Latitude. Longitude, Depth. Temperature. Bottom. 
3357 GI SHON Gs 81° 44’ W, 782 fathoms Sista 1s Gn. S. 
3393 fealbaNe 79° 36° W. 1020 =¢§ 36.8° F. Gn. M. 
The formule given below will serve to indicate the closeness of the rela- 
tionships of the seven species belonging to the genus Alepocephalus known 
from off the North American coasts. 
A. asperifrons B. 6, D. 17, A. 19, V. 7, P. 11, Seales 8-56 to 58-16. 
A. Bairdii Be 6D) 225 25) Vl O; eee 7-65-11. 
A. productus DT eA al ii és 9-67-12. 
A. Agassizii Dio ASIAN =O. Pate << 10 =90hte 
A. fundulus Be 7 De tG AS ie, Viab, be ble ee sho 90— 3. 
A. convexifrons B. 6, D.18, A.19, V.7,P.11, “ 12-90-17. 
A. tenebrosus Dirty Acai, P.10, “- -16—90-16. 
Alepocephalus convexifrons sp. n. 
Plate LIX. fig. 2. 
Br r. 6; D, 18. A. 19s Vers Brill 3 E190) cal hire? al aie 
A stouter and less elongate form than A. /widu/us, more slender in the 
caudal region, more curved on the top of the head, and with much less 
depression at the back of the crown. Head about two sevenths of the entire 
length, without a longitudinal groove on the top, profile convex from snout 
to nape. Snout medium, little longer than the eye, narrow between the 
nostrils, concave in front of the eye, broadened about the mouth, blunted at 
the end. Mouth wide; maxillary much broadened and rounded posteriorly 
reaching almost or quite to a vertical through the middle of the eye. Teeth 
small, in a single series on intermaxillaries, palatines, and dentaries. Vom- 
erine teeth undetermined. Gills four; lamelle short, narrow ; rakers seven 
plus fifteen, longest less than half as long as the eye. Pseudobranchie well 
developed. Opercles broad, thin, membranous toward the margins. Gill 
openings wide; membranes not united, free from the isthmus. Twelve 
pyloric czeca, 
Dorsal origin two and one fourth lengths of the head from the end of the 
snout, above the vent; length of base three fourths of its distance from the 
median rays of the caudal. Anal origin below the third or the fourth ray of 
the dorsal; base reaching six or seven rays backward of that of the dorsal. 
Caudal pedicel moderately slender. 
